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Implement ajax drag and drop to upload files (with code)

亚连Original: 2018-05-21 15:44:101494browse

This article mainly teaches you how to simply implement ajax drag and drop upload files, which has certain reference value. Interested friends can refer to

AJAX drag and drop upload function implementation for your reference. The specific content is as follows

<!DOCTYPE html>
<html lang="en">

<head>
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <meta http-equiv="X-UA-Compatible" content="ie=edge">
 <title>Document</title>
 <style>
 .box {
  width: 300px;
  height: 300px;
  border: 1px solid #000;
  text-align: center;
  line-height: 300px;
  font-size: 40px;
 }
 </style>
</head>

<body>
 <p class="box">+</p>

 <script>
 var box = document.querySelector(&#39;.box&#39;);

 box.ondragover = function (e) {
  e.preventDefault();
 }
 box.ondrop = function (e) {
  console.log(e.dataTransfer)
  e.preventDefault();
  var xhr = new XMLHttpRequest();
  xhr.onreadystatechange = function () {
  if (xhr.readyState == 4 && xhr.status == 200) {
   console.log(xhr.responseText)
  }
  }
  xhr.open(&#39;POST&#39;, &#39;./server.php&#39;, true);

  var formdata = new FormData();
  formdata.append(&#39;pic&#39;, e.dataTransfer.files[0]);
  formdata.append(&#39;name&#39;, &#39;luyao&#39;);
  xhr.send(formdata);

 }
 </script>
</body>

</html>

//server.php

<?php
 $rand = rand(1,1000).&#39;.jpg&#39;;
 move_uploaded_file($_FILES[&#39;pic&#39;][&#39;tmp_name&#39;], &#39;./uploads/&#39;.$rand);
 echo &#39;/uploads/&#39;.$rand;

The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

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